Eli5 How do phone calls work?

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Like …. I get the premise of the receiver and the sound is transmitted via radio waves…. But when you say it out loud??

We somehow trap our physical sound inside radio waves which you can’t physically see or touch and that transmits almost instantaneously and someone can then hear it ???

HOW

In: Technology

2 Answers

Anonymous 0 Comments

To break it down at a general level:

1. Your voice makes the air vibrate.
2. The air makes a microphone vibrate.
3. The microphone turns the vibrations into electrical “vibrations”.
4. The phone interprets the electrical signal digitally. At this point, it’s sort of like an MP3 file.
5. The digital audio gets sent to the other phone.
6. The other phone plays it back just like a music file (and it’s almost exactly the inverse of steps 1-4!)

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